could demodulate
Verbo regular: demodulate - demodulated- demodulated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could demodulate
you could demodulate
he could demodulate
we could demodulate
you could demodulate
they could demodulate 	I could be demodulating
you could be demodulating
he could be demodulating
we could be demodulating
you could be demodulating
they could be demodulating	I could have demodulated
you could have demodulated
he could have demodulated
we could have demodulated
you could have demodulated
they could have demodulated	I could have been demodulating
you could have been demodulating
he could have been demodulating
we could have been demodulating
you could have been demodulating
they could have been demodulating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't demodulate
you couldn't demodulate
he couldn't demodulate
we couldn't demodulate
you couldn't demodulate
they couldn't demodulate 	I couldn't be demodulating
you couldn't be demodulating
he couldn't be demodulating
we couldn't be demodulating
you couldn't be demodulating
they couldn't be demodulating	I couldn't have demodulated
you couldn't have demodulated
he couldn't have demodulated
we couldn't have demodulated
you couldn't have demodulated
they couldn't have demodulated	I couldn't have been demodulating
you couldn't have been demodulating
he couldn't have been demodulating
we couldn't have been demodulating
you couldn't have been demodulating
they couldn't have been demodulating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I demodulate?
could you demodulate?
could he demodulate?
could we demodulate?
could you demodulate?
could they demodulate? 	could I be demodulating?
could you be demodulating?
could he be demodulating?
could we be demodulating?
could you be demodulating?
could they be demodulating? 	could I have demodulated?
could you have demodulated?
could he have demodulated?
could we have demodulated?
could you have demodulated?
could they have demodulated? 	could I have been demodulating?
could you have been demodulating?
could he have been demodulating?
could we have been demodulating?
could you have been demodulating?
could they have been demodulating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I demodulate?
couldn't you demodulate?
couldn't he demodulate?
couldn't we demodulate?
couldn't you demodulate?
couldn't they demodulate? 	couldn't I be demodulating?
couldn't you be demodulating?
couldn't he be demodulating?
couldn't we be demodulating?
couldn't you be demodulating?
couldn't they be demodulating? 	couldn't I have demodulated?
couldn't you have demodulated?
couldn't he have demodulated?
couldn't we have demodulated?
couldn't you have demodulated?
couldn't they have demodulated? 	couldn't I have been demodulating?
couldn't you have been demodulating?
couldn't he have been demodulating?
couldn't we have been demodulating?
couldn't you have been demodulating?
couldn't they have been demodulating?